Hoisting-machine.



w. BOX.

, HOISTING MACHINE.

APPLICATION FILED JAN. 14, 1914.

1 1 1 3,95 1 Patented Oct. 20, 1914.-

2 SHEETSSHBET 1 W1 TNESSES: IN VENTOR W. A. BOX;

HOISTING' MACHINE.

APPLICA'IQION FILED JAN M, 1914.

Patented 061;. 20,- 19.14.

2 SHEETSSHEET 2.

WITNESSES.-

3o zont'al,

WILLIAM A. BOX, OF DENVER, COLORADO.

HOISTING-MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 19.14.

Application filed January 14, 1914. Serial No. 812,052.

16 vision of a portable yet'powerful hoist which being of compact and simple construction, is in practice, clamped on a column of the character commonly used 111. mines for securing rock drills.

My improved hoist by reason of 1ts small proportions may be used in stopes and other parts of a mine too small to accommodate ,a hoisting machine of ordlnary construction,

it may be readily raised or lowered to any 2 desired height on the column on which it is mounted, andthe simplicity of its construction and ready accessibility of itsoperatlve parts, permit of its beingused w thout the employment of skilled engineers as is neces- 25 sary in the operation of the'ondinary hoisting machines at present in QdfiiiZnOll use.

In the accompanying drawings 1n the various views of which like parts are similarly designated, Figure 1 represents a horiaxial section through my improved hoi t in its operative position on a column, and Fig. 2, a vertical section taken along the line 2-'2, Fig. 1, looking in the direction of thearrow drawn across said line,

Referring more specifically to the drawin s, the reference numeral 2 designates the frame on which the operating parts of the hoist are assembled and which is composed of a plate 3 and a gear case 4 which are con w n'ected by means of a tubular bearing sleeve 5 and a clamping element 14. The part 8 of the frame serves for the attachment of the motor (5 from which it is-spaced by meansrof an annular member 7 to provide a 4,5 crank-clmmlwr 8, the several parts being l rigidly connected by the use of bolts 9. The

motor (3 may beof any desired construction, that which is shown in the drawings being of the reversible type o be operated by comt il) pressed, air, and preferable by reason of its simplicity, compactness and comparatively great power. The bearing sleeve 5 wh ch connects the parts 3 and 4 of the supporting frame, has atone of its ends, a recessed, ex-

55 teriorly flanged head 10 which is/fitted in a central opening in the part 3 to. hich it is 29, afian v y side of t 'e machine, and a flange 3l- -at its rigidly secured by means of cap screws 12. The opposite end of the sleeve is fitted in an opening of the gear yasc 4 and it has interiorly, two lumring surfaces for the support of the crank-shaft l3. element 14 consists of a body member 15 composed of channel iron to which the parts land 7 of the supporting frame are rigidly secured by means of cap screws 16.

Secured to the body member of the clamp intermediate of its flanges, is a bar 17 of angle section and the corresponding flanges of the member and the bar are recossed to provide three distinct and separate seats for the upright column 18 to which the hoist attached. The adjustable member 1!) ofthc clamping element, consists of a bar which is slidingly mounted on two bolts 20 which at one of their ends are secured to the body member in parallel relation to each other. A serrated recess formed in the inner surface of the member 19 engages the surface of the colunm, and nuts 2] screwed onto the threaded, outer extremities of the bolts are provided to firmlydrivc the member against the column and thereby clamp the hoist rigidly in its adjustedposition on the same.

The shaft 13 which is rotatably mounted in the sleeve 5 of the supporting frame has -at one of its ends, a crank connection 22 with a rotary driving part of the motor 6 and adjacent the same end it has an integral collar 23 which fits in the before-mentioned recess of the sleeve and bears against a fiber packing 24 placed inside the same. This construction prevents undue leaking of motive fluid into the interior of the sleeve inasmuchas the pressure of fluid in the crank 'chamberwill hold the collar23 in cngr-igement with the packing ring. The little fluid that leaks into the sleeve ,will. carry suflicient oil to lubricate the bearing surfaces of the same. The outer end of the shaft projects beyond the frame 2 to receive a flywheel 25 and adriving pinion 26 which are rigidly fastened together, and a cap 27 secured at the extreme end of the shaft, provides a stop which limits the outwardjmovement of the said connected parts.

The winding drum 28 of the hoist is rotatably mounted on the bearing sleeve 5 between. the flange on the head'of the latter, and the gear case 4. The drum includes in its construction, an integral, concentric hub e at its end adjacent the motoropposite end, which has an outwardly projecting concentric rim 82 which provides a housing for part of the gearing by which the movement of the shaft is transmitted to ihe'drnm and which furthermore provides a surface for the application of a band-brake used to control the rotary motion of the drum.

The gearing above referred to comprises a gear wheel which is rigidly secured to the drum within the recess formed by the rim on its flange St. A pinion 3 f likewise disposed within the said recess in mesh with the gear wheel, is mounted at the end of a short shal' t 35 which is rotatably supported in a bearing formed in the wall of the gear case, and which carries at its opposite end a gear wheel 36 which meshes with the beforementioncd pinion 26 on the fly-wheel 25. The fly-wheel and the pinion 26 which are rigidly connected to each other, are slidably mounted on the outer portion of the crankshaft, :1 spring-held ball-catch 37 being pro vided to secure them for rotation with the shaft andhold them in either of two determinate positions by its placement in indentations 38 of the circumferential surface of the shaft. The gear-wheel 36 at the end of the shaft 35 and the pinion 26 on the flywheel are disposed in a chamber of the gearcase normally closed by means of a removable cover plate 39. The brake-band 4.0 which is placed around the rim 32- of the drum to frictionally engage the outer surface thereof, isrigidly connected at one of its ends to the body member of the clamp ing element as at 41 and its opposite extremity is secured to the end of a hand-lever t2 which at 43 is fulcrumed on the same memher and which is held in its adjusted posi tions on a ratchet rack 44 by means of a detent 45.

By the provision of the sliding pinion and fly-wheel, the rotative continuity between the crank-shaft and the drum may be instantly secured or broken While the engine is in operation; by adjustment of the controller-handle l6 of the motor, the movement of the drum can be-reversed or the supply of motive fluid discontinued; and the hand brake is as usual employed to discontinue the rotary movement of the drum and to hold its lead at any desired point in the I operation of the machine.

It will be observed that the different parts of my improved hoist are evenly distributed with relation to the clamping element and that the bearing sleeve is axially disposed column, a

and the crank shaft for rotation about a common axis, relieves the shaft from the weight of the load and in case of wear or breakage it may be readily renewed.

Having thus described my invention what I claim and desire to secure by Letters-Patent is:

l. A hoist comprising a supporting frame inc-hiding an element for clamping it on a motor-driven winding drum mounted on said frame, and ha ving a brakesurface, a braldvbaml disposed to l'rietioxn ally engage said surface, and a lever adjnstably mounted on said element, the ends of the said band being attached respectively to the said lever and to the said element.

A hoist comprising a supporting frame including en element for clamping it on a column, a winding drum rotatably mounted on said frnn a rotary shaft, a motor cured on theframe in driving eomici-liion with said shaft, gearing for transmitting. the movement ,of said shaft to said drum, including a driving member com 'iosed of a pinion and a fly-whee rigidly eonnm-lcd together and sl dably mounted on the shaft, and means for holding said nuj-m bor for rotation with the shaft, at different points of the same.

3. A hoist comprising a supporting frame including an element for clamp" r it on u iount column, a winding drum rotata l on said frame, a rotary shaft, :1 mo cured on the frame in driving connwtnr with so id shaft, gearing for trmisin iiirzg the movement of said shaft to said drum, ineluding a driving member slidablv mounlml on the shaft, and. means for holding; said member for rotation with the shaft, at (ii fferent points of the same.

4. Alhoistcomprisin a supporting frame including an element for clamping it on a column, a winding drum rotatahly nizvxnted on said frame, a rotary shaft. :1 mo cured on the frame in driving Cull! with said shaft, gearing for transmit-inag; the movement of said shaft to said drum, including a driving member sl dablv mounted on the shaft, and a s. n-inn ln-ld catch for holding said member for coalition with the shaft at different points thereof, by its position in indentations in the circumferential surface of the same.

5. A hoist comprising a supporting frame composed of two separate parts, a tubular bearing connecting the same, an annular men'iber secured to one of said parts. and t clamping element secured to the said memher and to the other pa t, a motor mounted on the frame in engagement with the outer surface of said member, a shaft supported in said bearing and having a crank-connec tion with the motor, which extends in the innerfspace of said annular .inembcr, a winding drum mounted 'for rotation on said boa r-- ing, and gearing on the other frame-part, for transmitting the movement of the shaft to the said drum.

6. A hoist comprising a supporting frame including a tubular bearing having a recessed head, a shaft rotatably mounted in said bearing and having at one of its ends, a collar fitted in said recess, packing in said recess to be engaged by said collar, 21 motor secured to said frame and havinga driving connection with said shaft at the collar-end thereof, a Winding drum mounted for rotation on said hearing, and gearing for transmitting the movement of said shaft to said drum. i In testimony whereof I ha e aflixed my signature in presence of two Witnesses.

VILLIAM A. BOX.

Witnesses:

G. J. RoLLANDn'r, L. RHoAnns. 

